PXB4219E Datasheet, PDF (255/290 Pages) Infineon Technologies AG – Interworking Element for 8 E1/T1 Lines

Framer Interface in SYM8
RFCLK
FRDAT
FRMFB0
FTDAT
IWE8, V3.4
PXB 4219E, PXB 4220E, PXB 4221E
Electrical Characteristics
1
3
4
5
6
7
Figure 62 Framer Interface Timing in SYM 8.192 MHz
Fitsym8
Table 40 Framer Interface Timing in SYM8
No. Parameter
Limit Values
Unit
Min
Typ
Max
1
T_RFCLK: Period RFCLK
122
ns
1A
F_RFCLK: Frequency RFCLK
-130 ppm 8,192 +130ppm MHz
3
Setup time FRDAT before RFCLK 15
ns
falling/rising (center of bit period)
4
Hold time FRDAT after RFCLK falling/ 15
ns
rising (center of bit period)
5
Setup time FRMFBN¹⁾ before RFCLK 15
ns
falling/rising
6
Hold time FRMFBN¹⁾ after RFCLK 15
ns
falling
7
Delay RFCLK falling to FTDAT
3
32
ns
1) _{For usage of FRMFBN in SYM mode see Chapter 7.24}
Data Sheet
255
2003-01-20